内容

• 公共函数
• 静态公共成员
• 详细描述

QNdefMessage Class

QNdefMessage class provides an NFC NDEF message. 更多...

头：	#include <QNdefMessage>
qmake:	QT += nfc
Since:	Qt 5.2
继承：	QList

• 所有成员列表，包括继承成员

公共函数

	QNdefMessage ()
	QNdefMessage (const QNdefRecord & record )
	QNdefMessage (const QNdefMessage & message )
	QNdefMessage (const QList<QNdefRecord> & records )
QByteArray	toByteArray () const
bool	operator== (const QNdefMessage & other ) const

• 78 公共函数继承自 QList

静态公共成员

QNdefMessage

fromByteArray (const QByteArray & message )

• 3 static public members inherited from QList

详细描述

QNdefMessage class provides an NFC NDEF message.

A QNdefMessage is a collection of 0 or more QNdefRecords. QNdefMessage 继承自 QList < QNdefRecord > and therefore the standard QList functions can be used to manipulate the NDEF records in the message.

NDEF messages can be parsed from a byte array conforming to the NFC Data Exchange Format technical specification by using the fromByteArray () static function. Conversely QNdefMessages can be converted into a byte array with the toByteArray () 函数。

成员函数文档编制

QNdefMessage:: QNdefMessage ()

Constructs a new empty NDEF message.

QNdefMessage:: QNdefMessage (const QNdefRecord & record )

Constructs a new NDEF message containing a single record record .

QNdefMessage:: QNdefMessage (const QNdefMessage & message )

Constructs a new NDEF message that is a copy of message .

QNdefMessage:: QNdefMessage (const QList < QNdefRecord > & records )

Constructs a new NDEF message that contains all of the records in records .

[static] QNdefMessage QNdefMessage:: fromByteArray (const QByteArray & message )

Returns an NDEF message parsed from the contents of message .

message parameter is interpreted as the raw message format defined in the NFC Data Exchange Format technical specification.

If a parse error occurs an empty NDEF message is returned.

QByteArray QNdefMessage:: toByteArray () const

Returns the NDEF message as a byte array.

The return value of this function conforms to the format defined in the NFC Data Exchange Format technical specification.

bool QNdefMessage:: operator== (const QNdefMessage & other ) const

Returns true if this NDEF message is equivalent to other ；否则返回 false。

An empty message (i.e. isEmpty () returns true) is equivalent to a NDEF message containing a single record of type QNdefRecord::Empty .